Relive the excitement of the Patriots’ path to their fourth Super Bowl Championship with “Pumped,” a special commemorative book from The Boston Globe.

App helps tell difference between smirks, smiles

For advertisers, telling the difference is crucial, and a Mass. company aims to help

How the software works

As people react to commercials, a camera records their facial expressions. Below is a hypothetical example of how the software measures different responses, or emotions, by analyzing a viewer’s facial expressions.

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